﻿/* =========================================================
 * bootstrap-datepicker.js
 * http://www.eyecon.ro/bootstrap-datepicker
 * =========================================================
 * Copyright 2012 Stefan Petre
 * Improvements by Andrew Rowls
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ========================================================= */

!function ($) {

    function UTCDate() {
        return new Date(Date.UTC.apply(Date, arguments));
    }
    function UTCToday() {
        var today = new Date();
        return UTCDate(today.getUTCFullYear(), today.getUTCMonth(), today.getUTCDate());
    }

    // Picker object

    var Datepicker = function (element, options) {
        var that = this;

        this.element = $(element);
        this.language = options.language || this.element.data('date-language') || "cn";
        this.language = this.language in dates ? this.language : this.language.split('-')[0]; //Check if "de-DE" style date is available, if not language should fallback to 2 letter code eg "de"
        this.language = this.language in dates ? this.language : "cn";
        this.isRTL = dates[this.language].rtl || false;
        this.format = DPGlobal.parseFormat(options.format || this.element.data('date-format') || dates[this.language].format || 'yyyy-mm-dd');
        this.isInline = false;
        this.isInput = this.element.is('input');
        this.component = this.element.is('.date') ? this.element.find('.add-on') : false;
        this.hasInput = this.component && this.element.find('input').length;
        if (this.component && this.component.length === 0)
            this.component = false;

        this._attachEvents();

        this.forceParse = true;
        if ('forceParse' in options) {
            this.forceParse = options.forceParse;
        } else if ('dateForceParse' in this.element.data()) {
            this.forceParse = this.element.data('date-force-parse');
        }


        this.picker = $(DPGlobal.template)
							.appendTo(this.isInline ? this.element : 'body')
							.on({
							    click: $.proxy(this.click, this),
							    mousedown: $.proxy(this.mousedown, this)
							});

        if (this.isInline) {
            this.picker.addClass('datepicker-inline');
        } else {
            this.picker.addClass('datepicker-dropdown dropdown-menu');
        }
        if (this.isRTL) {
            this.picker.addClass('datepicker-rtl');
            this.picker.find('.prev i, .next i')
						.toggleClass('icon-arrow-left icon-arrow-right');
        }
        $(document).on('mousedown', function (e) {
            // Clicked outside the datepicker, hide it
            if ($(e.target).closest('.datepicker.datepicker-inline, .datepicker.datepicker-dropdown').length === 0) {
                that.hide();
            }
        });

        this.autoclose = false;
        if ('autoclose' in options) {
            this.autoclose = options.autoclose;
        } else if ('dateAutoclose' in this.element.data()) {
            this.autoclose = this.element.data('date-autoclose');
        }

        this.keyboardNavigation = true;
        if ('keyboardNavigation' in options) {
            this.keyboardNavigation = options.keyboardNavigation;
        } else if ('dateKeyboardNavigation' in this.element.data()) {
            this.keyboardNavigation = this.element.data('date-keyboard-navigation');
        }

        this.viewMode = this.startViewMode = 0;
        switch (options.startView || this.element.data('date-start-view')) {
            case 2:
            case 'decade':
                this.viewMode = this.startViewMode = 2;
                break;
            case 1:
            case 'year':
                this.viewMode = this.startViewMode = 1;
                break;
        }

        this.todayBtn = (options.todayBtn || this.element.data('date-today-btn') || false);
        this.todayHighlight = (options.todayHighlight || this.element.data('date-today-highlight') || false);

        this.calendarWeeks = false;
        if ('calendarWeeks' in options) {
            this.calendarWeeks = options.calendarWeeks;
        } else if ('dateCalendarWeeks' in this.element.data()) {
            this.calendarWeeks = this.element.data('date-calendar-weeks');
        }
        if (this.calendarWeeks)
            this.picker.find('tfoot th.today')
						.attr('colspan', function (i, val) {
						    return parseInt(val) + 1;
						});

        this.weekStart = ((options.weekStart || this.element.data('date-weekstart') || dates[this.language].weekStart || 0) % 7);
        this.weekEnd = ((this.weekStart + 6) % 7);
        this.startDate = -Infinity;
        this.endDate = Infinity;
        this.daysOfWeekDisabled = [];
        this.setStartDate(options.startDate || this.element.data('date-startdate'));
        this.setEndDate(options.endDate || this.element.data('date-enddate'));
        this.setDaysOfWeekDisabled(options.daysOfWeekDisabled || this.element.data('date-days-of-week-disabled'));
        this.fillDow();
        this.fillMonths();
        this.update();
        this.showMode();

        if (this.isInline) {
            this.show();
        }
    };

    Datepicker.prototype = {
        constructor: Datepicker,

        _events: [],
        _attachEvents: function () {
            this._detachEvents();
            if (this.isInput) { // single input
                this._events = [
					[this.element, {
					    focus: $.proxy(this.show, this),
					    keyup: $.proxy(this.update, this),
					    keydown: $.proxy(this.keydown, this)
					}]
                ];
            }
            else if (this.component && this.hasInput) { // component: input + button
                this._events = [
					// For components that are not readonly, allow keyboard nav
					[this.element.find('input'), {
					    focus: $.proxy(this.show, this),
					    keyup: $.proxy(this.update, this),
					    keydown: $.proxy(this.keydown, this)
					}],
					[this.component, {
					    click: $.proxy(this.show, this)
					}]
                ];
            }
            else if (this.element.is('div')) {  // inline datepicker
                this.isInline = true;
            }
            else {
                this._events = [
					[this.element, {
					    click: $.proxy(this.show, this)
					}]
                ];
            }
            for (var i = 0, el, ev; i < this._events.length; i++) {
                el = this._events[i][0];
                ev = this._events[i][1];
                el.on(ev);
            }
        },
        _detachEvents: function () {
            for (var i = 0, el, ev; i < this._events.length; i++) {
                el = this._events[i][0];
                ev = this._events[i][1];
                el.off(ev);
            }
            this._events = [];
        },

        show: function (e) {
            this.picker.show();
            this.height = this.component ? this.component.outerHeight() : this.element.outerHeight();
            this.update();
            this.place();
            $(window).on('resize', $.proxy(this.place, this));
            if (e) {
                e.stopPropagation();
                e.preventDefault();
            }
            this.element.trigger({
                type: 'show',
                date: this.date
            });
        },

        hide: function (e) {
            if (this.isInline) return;
            if (!this.picker.is(':visible')) return;
            this.picker.hide();
            $(window).off('resize', this.place);
            this.viewMode = this.startViewMode;
            this.showMode();
            if (!this.isInput) {
                $(document).off('mousedown', this.hide);
            }

            if (
				this.forceParse &&
				(
					this.isInput && this.element.val() ||
					this.hasInput && this.element.find('input').val()
				)
			)
                this.setValue();
            this.element.trigger({
                type: 'hide',
                date: this.date
            });
        },

        remove: function () {
            this._detachEvents();
            this.picker.remove();
            delete this.element.data().datepicker;
        },

        getDate: function () {
            var d = this.getUTCDate();
            return new Date(d.getTime() + (d.getTimezoneOffset() * 60000));
        },

        getUTCDate: function () {
            return this.date;
        },

        setDate: function (d) {
            this.setUTCDate(new Date(d.getTime() - (d.getTimezoneOffset() * 60000)));
        },

        setUTCDate: function (d) {
            this.date = d;
            this.setValue();
        },

        setValue: function () {
            var formatted = this.getFormattedDate();
            if (!this.isInput) {
                if (this.component) {
                    this.element.find('input').val(formatted);
                }
                this.element.data('date', formatted);
            } else {
                this.element.val(formatted);
            }
        },

        getFormattedDate: function (format) {
            if (format === undefined)
                format = this.format;
            return DPGlobal.formatDate(this.date, format, this.language);
        },

        setStartDate: function (startDate) {
            this.startDate = startDate || -Infinity;
            if (this.startDate !== -Infinity) {
                this.startDate = DPGlobal.parseDate(this.startDate, this.format, this.language);
            }
            this.update();
            this.updateNavArrows();
        },

        setEndDate: function (endDate) {
            this.endDate = endDate || Infinity;
            if (this.endDate !== Infinity) {
                this.endDate = DPGlobal.parseDate(this.endDate, this.format, this.language);
            }
            this.update();
            this.updateNavArrows();
        },

        setDaysOfWeekDisabled: function (daysOfWeekDisabled) {
            this.daysOfWeekDisabled = daysOfWeekDisabled || [];
            if (!$.isArray(this.daysOfWeekDisabled)) {
                this.daysOfWeekDisabled = this.daysOfWeekDisabled.split(/,\s*/);
            }
            this.daysOfWeekDisabled = $.map(this.daysOfWeekDisabled, function (d) {
                return parseInt(d, 10);
            });
            this.update();
            this.updateNavArrows();
        },

        place: function () {
            if (this.isInline) return;
            var zIndex = parseInt(this.element.parents().filter(function () {
                return $(this).css('z-index') != 'auto';
            }).first().css('z-index')) + 10;
            var offset = this.component ? this.component.offset() : this.element.offset();
            var height = this.component ? this.component.outerHeight(true) : this.element.outerHeight(true);
            this.picker.css({
                top: offset.top + height,
                left: offset.left,
                zIndex: zIndex
            });
        },

        update: function () {
            var date, fromArgs = false;
            if (arguments && arguments.length && (typeof arguments[0] === 'string' || arguments[0] instanceof Date)) {
                date = arguments[0];
                fromArgs = true;
            } else {
                date = this.isInput ? this.element.val() : this.element.data('date') || this.element.find('input').val();
            }

            this.date = DPGlobal.parseDate(date, this.format, this.language);

            if (fromArgs) this.setValue();

            if (this.date < this.startDate) {
                this.viewDate = new Date(this.startDate);
            } else if (this.date > this.endDate) {
                this.viewDate = new Date(this.endDate);
            } else {
                this.viewDate = new Date(this.date);
            }
            this.fill();
        },

        fillDow: function () {
            var dowCnt = this.weekStart,
			html = '<tr>';
            if (this.calendarWeeks) {
                var cell = '<th class="cw">&nbsp;</th>';
                html += cell;
                this.picker.find('.datepicker-days thead tr:first-child').prepend(cell);
            }
            while (dowCnt < this.weekStart + 7) {
                html += '<th class="dow">' + dates[this.language].daysMin[(dowCnt++) % 7] + '</th>';
            }
            html += '</tr>';
            this.picker.find('.datepicker-days thead').append(html);
        },

        fillMonths: function () {
            var html = '',
			i = 0;
            while (i < 12) {
                html += '<span class="month">' + dates[this.language].monthsShort[i++] + '</span>';
            }
            this.picker.find('.datepicker-months td').html(html);
        },

        fill: function () {
            var d = new Date(this.viewDate),
				year = d.getUTCFullYear(),
				month = d.getUTCMonth(),
				startYear = this.startDate !== -Infinity ? this.startDate.getUTCFullYear() : -Infinity,
				startMonth = this.startDate !== -Infinity ? this.startDate.getUTCMonth() : -Infinity,
				endYear = this.endDate !== Infinity ? this.endDate.getUTCFullYear() : Infinity,
				endMonth = this.endDate !== Infinity ? this.endDate.getUTCMonth() : Infinity,
				currentDate = this.date && this.date.valueOf(),
				today = new Date();
            this.picker.find('.datepicker-days thead th.switch')
						.text(dates[this.language].months[month] + ' ' + year);
            this.picker.find('tfoot th.today')
						.text(dates[this.language].today)
						.toggle(this.todayBtn !== false);
            this.updateNavArrows();
            this.fillMonths();
            var prevMonth = UTCDate(year, month - 1, 28, 0, 0, 0, 0),
				day = DPGlobal.getDaysInMonth(prevMonth.getUTCFullYear(), prevMonth.getUTCMonth());
            prevMonth.setUTCDate(day);
            prevMonth.setUTCDate(day - (prevMonth.getUTCDay() - this.weekStart + 7) % 7);
            var nextMonth = new Date(prevMonth);
            nextMonth.setUTCDate(nextMonth.getUTCDate() + 42);
            nextMonth = nextMonth.valueOf();
            var html = [];
            var clsName;
            while (prevMonth.valueOf() < nextMonth) {
                if (prevMonth.getUTCDay() == this.weekStart) {
                    html.push('<tr>');
                    if (this.calendarWeeks) {
                        // ISO 8601: First week contains first thursday.
                        // ISO also states week starts on Monday, but we can be more abstract here.
                        var
							// Start of current week: based on weekstart/current date
							ws = new Date(+prevMonth + (this.weekStart - prevMonth.getUTCDay() - 7) % 7 * 864e5),
							// Thursday of this week
							th = new Date(+ws + (7 + 4 - ws.getUTCDay()) % 7 * 864e5),
							// First Thursday of year, year from thursday
							yth = new Date(+(yth = UTCDate(th.getUTCFullYear(), 0, 1)) + (7 + 4 - yth.getUTCDay()) % 7 * 864e5),
							// Calendar week: ms between thursdays, div ms per day, div 7 days
							calWeek = (th - yth) / 864e5 / 7 + 1;
                        html.push('<td class="cw">' + calWeek + '</td>');

                    }
                }
                clsName = '';
                if (prevMonth.getUTCFullYear() < year || (prevMonth.getUTCFullYear() == year && prevMonth.getUTCMonth() < month)) {
                    clsName += ' old';
                } else if (prevMonth.getUTCFullYear() > year || (prevMonth.getUTCFullYear() == year && prevMonth.getUTCMonth() > month)) {
                    clsName += ' new';
                }
                // Compare internal UTC date with local today, not UTC today
                if (this.todayHighlight &&
					prevMonth.getUTCFullYear() == today.getFullYear() &&
					prevMonth.getUTCMonth() == today.getMonth() &&
					prevMonth.getUTCDate() == today.getDate()) {
                    clsName += ' today';
                }
                if (currentDate && prevMonth.valueOf() == currentDate) {
                    clsName += ' active';
                }
                if (prevMonth.valueOf() < this.startDate || prevMonth.valueOf() > this.endDate ||
					$.inArray(prevMonth.getUTCDay(), this.daysOfWeekDisabled) !== -1) {
                    clsName += ' disabled';
                }
                html.push('<td class="day' + clsName + '">' + prevMonth.getUTCDate() + '</td>');
                if (prevMonth.getUTCDay() == this.weekEnd) {
                    html.push('</tr>');
                }
                prevMonth.setUTCDate(prevMonth.getUTCDate() + 1);
            }
            this.picker.find('.datepicker-days tbody').empty().append(html.join(''));
            var currentYear = this.date && this.date.getUTCFullYear();

            var months = this.picker.find('.datepicker-months')
						.find('th:eq(1)')
							.text(year)
							.end()
						.find('span').removeClass('active');
            if (currentYear && currentYear == year) {
                months.eq(this.date.getUTCMonth()).addClass('active');
            }
            if (year < startYear || year > endYear) {
                months.addClass('disabled');
            }
            if (year == startYear) {
                months.slice(0, startMonth).addClass('disabled');
            }
            if (year == endYear) {
                months.slice(endMonth + 1).addClass('disabled');
            }

            html = '';
            year = parseInt(year / 10, 10) * 10;
            var yearCont = this.picker.find('.datepicker-years')
								.find('th:eq(1)')
									.text(year + '-' + (year + 9))
									.end()
								.find('td');
            year -= 1;
            for (var i = -1; i < 11; i++) {
                html += '<span class="year' + (i == -1 || i == 10 ? ' old' : '') + (currentYear == year ? ' active' : '') + (year < startYear || year > endYear ? ' disabled' : '') + '">' + year + '</span>';
                year += 1;
            }
            yearCont.html(html);
        },

        updateNavArrows: function () {
            var d = new Date(this.viewDate),
				year = d.getUTCFullYear(),
				month = d.getUTCMonth();
            switch (this.viewMode) {
                case 0:
                    if (this.startDate !== -Infinity && year <= this.startDate.getUTCFullYear() && month <= this.startDate.getUTCMonth()) {
                        this.picker.find('.prev').css({ visibility: 'hidden' });
                    } else {
                        this.picker.find('.prev').css({ visibility: 'visible' });
                    }
                    if (this.endDate !== Infinity && year >= this.endDate.getUTCFullYear() && month >= this.endDate.getUTCMonth()) {
                        this.picker.find('.next').css({ visibility: 'hidden' });
                    } else {
                        this.picker.find('.next').css({ visibility: 'visible' });
                    }
                    break;
                case 1:
                case 2:
                    if (this.startDate !== -Infinity && year <= this.startDate.getUTCFullYear()) {
                        this.picker.find('.prev').css({ visibility: 'hidden' });
                    } else {
                        this.picker.find('.prev').css({ visibility: 'visible' });
                    }
                    if (this.endDate !== Infinity && year >= this.endDate.getUTCFullYear()) {
                        this.picker.find('.next').css({ visibility: 'hidden' });
                    } else {
                        this.picker.find('.next').css({ visibility: 'visible' });
                    }
                    break;
            }
        },

        click: function (e) {
            e.stopPropagation();
            e.preventDefault();
            var target = $(e.target).closest('span, td, th');
            if (target.length == 1) {
                switch (target[0].nodeName.toLowerCase()) {
                    case 'th':
                        switch (target[0].className) {
                            case 'switch':
                                this.showMode(1);
                                break;
                            case 'prev':
                            case 'next':
                                var dir = DPGlobal.modes[this.viewMode].navStep * (target[0].className == 'prev' ? -1 : 1);
                                switch (this.viewMode) {
                                    case 0:
                                        this.viewDate = this.moveMonth(this.viewDate, dir);
                                        break;
                                    case 1:
                                    case 2:
                                        this.viewDate = this.moveYear(this.viewDate, dir);
                                        break;
                                }
                                this.fill();
                                break;
                            case 'today':
                                var date = new Date();
                                date = UTCDate(date.getFullYear(), date.getMonth(), date.getDate(), 0, 0, 0);

                                this.showMode(-2);
                                var which = this.todayBtn == 'linked' ? null : 'view';
                                this._setDate(date, which);
                                break;
                        }
                        break;
                    case 'span':
                        if (!target.is('.disabled')) {
                            this.viewDate.setUTCDate(1);
                            if (target.is('.month')) {
                                var month = target.parent().find('span').index(target);
                                this.viewDate.setUTCMonth(month);
                                this.element.trigger({
                                    type: 'changeMonth',
                                    date: this.viewDate
                                });
                            } else {
                                var year = parseInt(target.text(), 10) || 0;
                                this.viewDate.setUTCFullYear(year);
                                this.element.trigger({
                                    type: 'changeYear',
                                    date: this.viewDate
                                });
                            }
                            this.showMode(-1);
                            this.fill();
                        }
                        break;
                    case 'td':
                        if (target.is('.day') && !target.is('.disabled')) {
                            var day = parseInt(target.text(), 10) || 1;
                            var year = this.viewDate.getUTCFullYear(),
								month = this.viewDate.getUTCMonth();
                            if (target.is('.old')) {
                                if (month === 0) {
                                    month = 11;
                                    year -= 1;
                                } else {
                                    month -= 1;
                                }
                            } else if (target.is('.new')) {
                                if (month == 11) {
                                    month = 0;
                                    year += 1;
                                } else {
                                    month += 1;
                                }
                            }
                            this._setDate(UTCDate(year, month, day, 0, 0, 0, 0));
                        }
                        break;
                }
            }
        },

        _setDate: function (date, which) {
            if (!which || which == 'date')
                this.date = date;
            if (!which || which == 'view')
                this.viewDate = date;
            this.fill();
            this.setValue();
            this.element.trigger({
                type: 'changeDate',
                date: this.date
            });
            var element;
            if (this.isInput) {
                element = this.element;
            } else if (this.component) {
                element = this.element.find('input');
            }
            if (element) {
                element.change();
                if (this.autoclose && (!which || which == 'date')) {
                    this.hide();
                }
            }
        },

        moveMonth: function (date, dir) {
            if (!dir) return date;
            var new_date = new Date(date.valueOf()),
				day = new_date.getUTCDate(),
				month = new_date.getUTCMonth(),
				mag = Math.abs(dir),
				new_month, test;
            dir = dir > 0 ? 1 : -1;
            if (mag == 1) {
                test = dir == -1
					// If going back one month, make sure month is not current month
					// (eg, Mar 31 -> Feb 31 == Feb 28, not Mar 02)
					? function () { return new_date.getUTCMonth() == month; }
					// If going forward one month, make sure month is as expected
					// (eg, Jan 31 -> Feb 31 == Feb 28, not Mar 02)
					: function () { return new_date.getUTCMonth() != new_month; };
                new_month = month + dir;
                new_date.setUTCMonth(new_month);
                // Dec -> Jan (12) or Jan -> Dec (-1) -- limit expected date to 0-11
                if (new_month < 0 || new_month > 11)
                    new_month = (new_month + 12) % 12;
            } else {
                // For magnitudes >1, move one month at a time...
                for (var i = 0; i < mag; i++)
                    // ...which might decrease the day (eg, Jan 31 to Feb 28, etc)...
                    new_date = this.moveMonth(new_date, dir);
                // ...then reset the day, keeping it in the new month
                new_month = new_date.getUTCMonth();
                new_date.setUTCDate(day);
                test = function () { return new_month != new_date.getUTCMonth(); };
            }
            // Common date-resetting loop -- if date is beyond end of month, make it
            // end of month
            while (test()) {
                new_date.setUTCDate(--day);
                new_date.setUTCMonth(new_month);
            }
            return new_date;
        },

        moveYear: function (date, dir) {
            return this.moveMonth(date, dir * 12);
        },

        dateWithinRange: function (date) {
            return date >= this.startDate && date <= this.endDate;
        },

        keydown: function (e) {
            if (this.picker.is(':not(:visible)')) {
                if (e.keyCode == 27) // allow escape to hide and re-show picker
                    this.show();
                return;
            }
            var dateChanged = false,
				dir, day, month,
				newDate, newViewDate;
            switch (e.keyCode) {
                case 27: // escape
                    this.hide();
                    e.preventDefault();
                    break;
                case 37: // left
                case 39: // right
                    if (!this.keyboardNavigation) break;
                    dir = e.keyCode == 37 ? -1 : 1;
                    if (e.ctrlKey) {
                        newDate = this.moveYear(this.date, dir);
                        newViewDate = this.moveYear(this.viewDate, dir);
                    } else if (e.shiftKey) {
                        newDate = this.moveMonth(this.date, dir);
                        newViewDate = this.moveMonth(this.viewDate, dir);
                    } else {
                        newDate = new Date(this.date);
                        newDate.setUTCDate(this.date.getUTCDate() + dir);
                        newViewDate = new Date(this.viewDate);
                        newViewDate.setUTCDate(this.viewDate.getUTCDate() + dir);
                    }
                    if (this.dateWithinRange(newDate)) {
                        this.date = newDate;
                        this.viewDate = newViewDate;
                        this.setValue();
                        this.update();
                        e.preventDefault();
                        dateChanged = true;
                    }
                    break;
                case 38: // up
                case 40: // down
                    if (!this.keyboardNavigation) break;
                    dir = e.keyCode == 38 ? -1 : 1;
                    if (e.ctrlKey) {
                        newDate = this.moveYear(this.date, dir);
                        newViewDate = this.moveYear(this.viewDate, dir);
                    } else if (e.shiftKey) {
                        newDate = this.moveMonth(this.date, dir);
                        newViewDate = this.moveMonth(this.viewDate, dir);
                    } else {
                        newDate = new Date(this.date);
                        newDate.setUTCDate(this.date.getUTCDate() + dir * 7);
                        newViewDate = new Date(this.viewDate);
                        newViewDate.setUTCDate(this.viewDate.getUTCDate() + dir * 7);
                    }
                    if (this.dateWithinRange(newDate)) {
                        this.date = newDate;
                        this.viewDate = newViewDate;
                        this.setValue();
                        this.update();
                        e.preventDefault();
                        dateChanged = true;
                    }
                    break;
                case 13: // enter
                    this.hide();
                    e.preventDefault();
                    break;
                case 9: // tab
                    this.hide();
                    break;
            }
            if (dateChanged) {
                this.element.trigger({
                    type: 'changeDate',
                    date: this.date
                });
                var element;
                if (this.isInput) {
                    element = this.element;
                } else if (this.component) {
                    element = this.element.find('input');
                }
                if (element) {
                    element.change();
                }
            }
        },

        showMode: function (dir) {
            if (dir) {
                this.viewMode = Math.max(0, Math.min(2, this.viewMode + dir));
            }
            /*
				vitalets: fixing bug of very special conditions:
				jquery 1.7.1 + webkit + show inline datepicker in bootstrap popover.
				Method show() does not set display css correctly and datepicker is not shown.
				Changed to .css('display', 'block') solve the problem.
				See https://github.com/vitalets/x-editable/issues/37

				In jquery 1.7.2+ everything works fine.
			*/
            //this.picker.find('>div').hide().filter('.datepicker-'+DPGlobal.modes[this.viewMode].clsName).show();
            this.picker.find('>div').hide().filter('.datepicker-' + DPGlobal.modes[this.viewMode].clsName).css('display', 'block');
            this.updateNavArrows();
        }
    };

    $.fn.datepicker = function (option) {
        var args = Array.apply(null, arguments);
        args.shift();
        return this.each(function () {
            var $this = $(this),
				data = $this.data('datepicker'),
				options = typeof option == 'object' && option;
            if (!data) {
                $this.data('datepicker', (data = new Datepicker(this, $.extend({}, $.fn.datepicker.defaults, options))));
            }
            if (typeof option == 'string' && typeof data[option] == 'function') {
                data[option].apply(data, args);
            }
        });
    };

    $.fn.datepicker.defaults = {
    };
    $.fn.datepicker.Constructor = Datepicker;
    var dates = $.fn.datepicker.dates = {
        en: {
            days: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"],
            daysShort: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"],
            daysMin: ["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa", "Su"],
            months: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
            monthsShort: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
            today: "Today"
        },
        cn: {
            days: ['星期日', '星期一', '星期二', '星期三', '星期四', '星期五', '星期六','星期日'],
            daysShort: ['周日', '周一', '周二', '周三', '周四', '周五', '周六','周日'],
            daysMin: ['日', '一', '二', '三', '四', '五', '六','日'],
            months: ['一月', '二月', '三月', '四月', '五月', '六月', '七月', '八月', '九月', '十月', '十一月', '十二月'],
            monthsShort: ['一', '二', '三', '四', '五', '六', '七', '八', '九', '十', '十一', '十二'],
            today: "今天"
        }
    };

    var DPGlobal = {
        modes: [
			{
			    clsName: 'days',
			    navFnc: 'Month',
			    navStep: 1
			},
			{
			    clsName: 'months',
			    navFnc: 'FullYear',
			    navStep: 1
			},
			{
			    clsName: 'years',
			    navFnc: 'FullYear',
			    navStep: 10
			}],
        isLeapYear: function (year) {
            return (((year % 4 === 0) && (year % 100 !== 0)) || (year % 400 === 0));
        },
        getDaysInMonth: function (year, month) {
            return [31, (DPGlobal.isLeapYear(year) ? 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month];
        },
        validParts: /dd?|DD?|mm?|MM?|yy(?:yy)?/g,
        nonpunctuation: /[^ -\/:-@\[\u3400-\u9fff-`{-~\t\n\r]+/g,
        parseFormat: function (format) {
            // IE treats \0 as a string end in inputs (truncating the value),
            // so it's a bad format delimiter, anyway
            var separators = format.replace(this.validParts, '\0').split('\0'),
				parts = format.match(this.validParts);
            if (!separators || !separators.length || !parts || parts.length === 0) {
                throw new Error("Invalid date format.");
            }
            return { separators: separators, parts: parts };
        },
        parseDate: function (date, format, language) {
            if (date instanceof Date) return date;
            if (/^[\-+]\d+[dmwy]([\s,]+[\-+]\d+[dmwy])*$/.test(date)) {
                var part_re = /([\-+]\d+)([dmwy])/,
					parts = date.match(/([\-+]\d+)([dmwy])/g),
					part, dir;
                date = new Date();
                for (var i = 0; i < parts.length; i++) {
                    part = part_re.exec(parts[i]);
                    dir = parseInt(part[1]);
                    switch (part[2]) {
                        case 'd':
                            date.setUTCDate(date.getUTCDate() + dir);
                            break;
                        case 'm':
                            date = Datepicker.prototype.moveMonth.call(Datepicker.prototype, date, dir);
                            break;
                        case 'w':
                            date.setUTCDate(date.getUTCDate() + dir * 7);
                            break;
                        case 'y':
                            date = Datepicker.prototype.moveYear.call(Datepicker.prototype, date, dir);
                            break;
                    }
                }
                return UTCDate(date.getUTCFullYear(), date.getUTCMonth(), date.getUTCDate(), 0, 0, 0);
            }
            var parts = date && date.match(this.nonpunctuation) || [],
				date = new Date(),
				parsed = {},
				setters_order = ['yyyy', 'yy', 'M', 'MM', 'm', 'mm', 'd', 'dd'],
				setters_map = {
				    yyyy: function (d, v) { return d.setUTCFullYear(v); },
				    yy: function (d, v) { return d.setUTCFullYear(2000 + v); },
				    m: function (d, v) {
				        v -= 1;
				        while (v < 0) v += 12;
				        v %= 12;
				        d.setUTCMonth(v);
				        while (d.getUTCMonth() != v)
				            d.setUTCDate(d.getUTCDate() - 1);
				        return d;
				    },
				    d: function (d, v) { return d.setUTCDate(v); }
				},
				val, filtered, part;
            setters_map['M'] = setters_map['MM'] = setters_map['mm'] = setters_map['m'];
            setters_map['dd'] = setters_map['d'];
            date = UTCDate(date.getFullYear(), date.getMonth(), date.getDate(), 0, 0, 0);
            var fparts = format.parts.slice();
            // Remove noop parts
            if (parts.length != fparts.length) {
                fparts = $(fparts).filter(function (i, p) {
                    return $.inArray(p, setters_order) !== -1;
                }).toArray();
            }
            // Process remainder
            if (parts.length == fparts.length) {
                for (var i = 0, cnt = fparts.length; i < cnt; i++) {
                    val = parseInt(parts[i], 10);
                    part = fparts[i];
                    if (isNaN(val)) {
                        switch (part) {
                            case 'MM':
                                filtered = $(dates[language].months).filter(function () {
                                    var m = this.slice(0, parts[i].length),
										p = parts[i].slice(0, m.length);
                                    return m == p;
                                });
                                val = $.inArray(filtered[0], dates[language].months) + 1;
                                break;
                            case 'M':
                                filtered = $(dates[language].monthsShort).filter(function () {
                                    var m = this.slice(0, parts[i].length),
										p = parts[i].slice(0, m.length);
                                    return m == p;
                                });
                                val = $.inArray(filtered[0], dates[language].monthsShort) + 1;
                                break;
                        }
                    }
                    parsed[part] = val;
                }
                for (var i = 0, s; i < setters_order.length; i++) {
                    s = setters_order[i];
                    if (s in parsed && !isNaN(parsed[s]))
                        setters_map[s](date, parsed[s]);
                }
            }
            return date;
        },
        formatDate: function (date, format, language) {
            var val = {
                d: date.getUTCDate(),
                D: dates[language].daysShort[date.getUTCDay()],
                DD: dates[language].days[date.getUTCDay()],
                m: date.getUTCMonth() + 1,
                M: dates[language].monthsShort[date.getUTCMonth()],
                MM: dates[language].months[date.getUTCMonth()],
                yy: date.getUTCFullYear().toString().substring(2),
                yyyy: date.getUTCFullYear()
            };
            val.dd = (val.d < 10 ? '0' : '') + val.d;
            val.mm = (val.m < 10 ? '0' : '') + val.m;
            var date = [],
				seps = $.extend([], format.separators);
            for (var i = 0, cnt = format.parts.length; i < cnt; i++) {
                if (seps.length)
                    date.push(seps.shift());
                date.push(val[format.parts[i]]);
            }
            return date.join('');
        },
        headTemplate: '<thead>' +
							'<tr>' +
								'<th class="prev"><i class="icon-arrow-left"/></th>' +
								'<th colspan="5" class="switch"></th>' +
								'<th class="next"><i class="icon-arrow-right"/></th>' +
							'</tr>' +
						'</thead>',
        contTemplate: '<tbody><tr><td colspan="7"></td></tr></tbody>',
        footTemplate: '<tfoot><tr><th colspan="7" class="today"></th></tr></tfoot>'
    };
    DPGlobal.template = '<div class="datepicker">' +
							'<div class="datepicker-days">' +
								'<table class=" table-condensed">' +
									DPGlobal.headTemplate +
									'<tbody></tbody>' +
									DPGlobal.footTemplate +
								'</table>' +
							'</div>' +
							'<div class="datepicker-months">' +
								'<table class="table-condensed">' +
									DPGlobal.headTemplate +
									DPGlobal.contTemplate +
									DPGlobal.footTemplate +
								'</table>' +
							'</div>' +
							'<div class="datepicker-years">' +
								'<table class="table-condensed">' +
									DPGlobal.headTemplate +
									DPGlobal.contTemplate +
									DPGlobal.footTemplate +
								'</table>' +
							'</div>' +
						'</div>';

    $.fn.datepicker.DPGlobal = DPGlobal;

}(window.jQuery);
